JPS59189019A - Straightening method of shape steel - Google Patents

Abstract

PURPOSE:To straighten either the vertical side or the lateral side, or straighten both sides at the same time as occasion demands, by forming a straightening process by providing adjusting rolls to the front and rear sides of straightening rolling rolls. CONSTITUTION:In case of straightening the downward warp of a shape steel (a), the shape (a) is subjected to rolling reduction by engaging its lower flange (b) with a group of three rolls 1, 2, 3, and is straightened into a straight line shape by providing a prescribed elongation to the flange (b) to make the lengths of its upper and lower sides uniform. Further, for straightening the rightward warp, the shape (a) is moved to the right side by moving laterally-moving adjusting rolls 4 to the right side, and the engaging ratio of inside rolls 2, 3 is changed to decrease the engaging width of the left side roll 2 so as to increase the engaging width of the right side roll 3 thereby setting the engaging ratio of them. In this way, a large elongation is provided to the right flange of a shape steel having a rightward warp to straighten the lateral warp.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a section steel having flanges at the upper and lower ends of the web, such as an H section steel or a T section steel.

As a conventional means for correcting vertical and horizontal curvature of this type of sequence, a rolling method has been proposed, but a method of straightening by flange rolling has been widely used. This flange straightening iE method is a method of completely straightening the bending of the entire section steel by elongation of the flange. Point 1' Although it is important to keep in mind, since the degree of correction is performed by changing the reduction area of the left and right rolls, all vertical bends are corrected. When correcting this, the upper and lower surfaces are likely to increase.

For this reason, there have been drawbacks such as repeated vertical and horizontal corrections, and reliance on slicing or advanced A-correction techniques.

The purpose of the present invention is to address these shortcomings in conventional correction methods, and to correct only left and right curves without changing vertical curves. As in,
It is an object of the present invention to provide a correction method that can correct either the upper or lower or left or right sides, or the upper or lower or left or right sides at the same time as required.

In the method of the present invention, JIS E flange straightening bandai with the largest young fruit is used, but 61 hard JF Tsutomu IE rolls are used once as a set for the Riu IE roll, As an auxiliary measure, two pairs of four-striped rolls are installed before and after the straightening rolls to adjust the left and right feeding of the material in batches to form a straightening IE process.

As shown in Figure 1, the If straightening roll of 6ilIIIiI presses the flange of the shape steel into the round shape.
The roll 1 (hereinafter referred to as the "one-rule roll") is rotated and driven as the external drive device 1 moves the section steel by pushing the self-driving device over and over again. ), and 11 straightening rolls on each side of the left and right sides f' arranged inside the flange so as to be combined with the 111110-Role 1 (inside 5: +jli Roll A).

+ 2 , 3<Thus, it is constructed. Inner rolls 2 and 6
is an idle roll with no side gradient in itself, but each C is an idle roll with no side gradient.
King device 21.51: # Nie Tef Su, make it possible to adjust the reduction blade.

1111 of the left inner roll 2 and right 1jlIJ
1 [L: L: Iol 6 is one field gap is original UIJ) 1 勺, and it is fixed to a fixed 4 so that it cannot be expanded except when necessary.

The moving A director rolls 4 are a pair of vertical rolls on the left and right that guide the home IT components in accordance with the flange, and although they are just guide rolls, they each have fLVC-roll position] for the transfer 'A'. A band device 41 is attached, and a pair of quarter-length adjusting rolls - 11'lJ5 are energized 4 times to the left and right, and the shape steel a is
The position on the feed line is such that it can be displaced from side to side.

The following describes the straightening operation of the edge-bearing method under such a roll configuration. If the shape is similar to that of a 6th countryman, the lower flange should be rolled with 6 rolls (Hl, 2.6) as shown in Figure 41. By lowering the total length by 1f and giving the specified elongation to the flange, the upper and lower lengths are made uniform and the shape
:ff1(B) 160 iE to l.

In addition, the shape yf4θg) is upwardly convex, as shown in Figure 4.
Straight line method (Figure 4 CB) by fixing hairs 1 and 2.6 and giving elongation to the upper flange
VrC bridge IE. -The width of the upward curve and the width of the upward curve are basically the same. You can think of it as a reverse transmission.

Next, I will explain how to correct the bend in the left and right direction. The flange is centered on the wafer Off.
According to the rules, the 1st and 1st rolls 2.6'ff are each engaged ♂, and due to their interaction with the lower 1st roll 1, they are lowered by 1 degree, and the downstream force can be adjusted separately for the left and right sides. 1'T 1
It is 1 piece. However, /$: U according to the Invention Act
The left and right rolling blades are oriented vertically (r-folding), and by creating a difference in the volume distribution of the rolling pressure and thread joining parts, the blades can be changed to 1 mm. In other words, when the width of the flange is curved to the right like ib:rcA), it is necessary to give more elongation to the right side of the flange than to the left side. Therefore, 5. As shown in FIG. 6, by stopping the left-right movement adjustment roll 4 on the right side, the Nosugi Steel is moved to the right side, the ratio of 1-to-1 contact between the inner 1-rule rolls 2 and 6 is changed, and the engagement of the left-hand roll 2 is changed. The engagement ratio of the inner rolls 2 and 6 is set so that the engagement width 12 of the right [11110-rule] is increased.

As a result, a large elongation is given to the right flange of the right-bent shaped steel girder shown in Figure 5M, resulting in a shape cap in which the left-right bending is corrected (Fig. 5 (B)).

The 9 high correctness in the case of left-hand bending is exactly the opposite of the above-mentioned case of right-hand bending correction, and the engagement width of the left roll 2 is 1. This can be corrected by setting the value larger.

As mentioned above, in the configuration of the method of the present invention, the distance between the left inner roll 2 and the right inner roll 6 is always kept constant, so no matter how the engagement width is varied. 2
engagement of inner rolls 2°61/C;
l+12) is constant, and this does not cause the j rolling edge of the entire roll group to vary. The crab that did it is
The rolling blade of the lower flange b relative to the upper flange bK does not change, and only the left and right bends can be corrected while keeping the vertical bends constant. When changing the thread alignment and corners of the flange, use the transfer adjustment roll 4 shown in Fig. 1 to change the shape.
The position of the beam on the feed line a is adjusted by 1 hyperaction A to the left and right to shift it to the alignment position with the group of straightening rolls + itk.

As another means of changing the degree of engagement of the flanges on all left and right sides of the inner roll without changing the feed line f of the shape -jjlJQ, instead of providing the movable straightening roll 4, as shown in Fig. 7. A stopping device 22.52 for moving the left and right inner rolls 2.6 forward and backward in one direction is prepared and installed, and 211 (h) It is also possible to use a means of synchronizing all left and right movements and making coherent movements.

According to the method of the present invention, in the case of correcting left and right bending, when the left and right rolls are all moved, the pressure F load is kept constant and the sheet Since the sum (4++12) of the undulation and one interval of engagement for one crown is always constant, the sum of the rolling blades applied to the flange during straightening is clearly constant and does not fluctuate. In addition, only the left and right curvature can be corrected without changing the JO1's vertical and vertical directions. Furthermore, by combining the operation of constantly changing the rolling pressure of the inner rolls, it becomes possible to simultaneously correct the vertical and horizontal bends of the shaped steel.

As described above, the method of the present invention makes it possible to perform a small amount of shape correction in one direction without affecting the other directions at all, and complex correction is also possible. Therefore, it is effective as a flattening device for shaped steel, and can also be used as a flattening device for straight bends. There are many advantages, such as no need for skill to operate the automatic f/f function.

[Brief explanation of the drawing]

FIG. 1 is a front view of a total of 1 + 14 components of the shining method according to the present invention, with some notched eaves not shown. The 21st stage is II of Figure 1
- Side view taken along line II. 6 to 5 1 are explanatory diagrams of the operation during correction by the method of the present invention, in which FIG. 6 is a side view showing the case where lower question>='IE, and FIG. 1llllI plane view showing the case of , and the second figure shows the plane section in the case of right bend correction, respectively. Figure 6 shows the Samurai IE surface using the tll-Vl line in Figure 5. FIG. 7 is a drawing of the same pot as in FIG. 1 showing another implementation of the method of the present invention. 1: Roll 216: Straightening roll 4: Moving straightening roll a: Shaped copper cargo license applicant Sumitomo Kin Iman Kogyo Co., Ltd. Figure 1 Figure 2 Figure 1 Figure 1), Figure f77

Claims (1)

[Claims] A set of six straightening rolls press-fits into the outer surface of the flange of the shaped steel and the inner training surfaces on the left and right sides, and packing of the shaped steel moving A-side rolls or bi-J side rolls before and after the straightening rolls. In the straightening device for shaped steel, which consists of providing 10,000 stop gears Ld, the upper and lower parts of the shaped steel can be adjusted by adjusting the lower blade of one stone using the inner and outer IE rolls, tl and lj rolls 111M. As well as bending the direction,
1 of the left and right flanges that fit into the section steel on the feed line without changing the lower and lower blades for the upper and lower n1t.
The upper F [11 bending and bending in the left and right direction;